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Stiffness Measurement Applied to the iGEN4

Stiffness Measurement Applied to the iGEN4. Presented by Michael Joseph, Peter Zaki, and Jay Yen. Table of Contents. 1.Title 2.Table of Contents 3. M ission Statement 4. S tiffness th e old fashioned way 5. Problem Statement: Innovation 6. The Importance of Stiffness

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Stiffness Measurement Applied to the iGEN4

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  1. Stiffness Measurement Applied to the iGEN4 Presented by Michael Joseph, Peter Zaki, and Jay Yen

  2. Table of Contents 1.Title 2.Table of Contents 3. Mission Statement 4. Stiffness the old fashioned way 5. Problem Statement: Innovation 6. The Importance of Stiffness 7. Screening matrix 8. Slides 8-11: Prototype ideas 12. Weighted Matrix 13.-14. Final Solution 15. Conclusion 16. Resources 1 7.Questions

  3. The Goal is to Measure Paper Stiffness • To enhance the printing capabilities of the iGEN4 printer by designing a sensing device that will detect the variable bending stiffness of an 8.5”x11” sheet of paper moving through a simple paper path at a speed of 250mm/s to 750mm/s. • The solution needs to be socially, economically, and environmentally sustainable.

  4. Stiffness the old fashioned way Tensile Stiffness Bending Stiffness Equivalent stiffness

  5. Innovation • Currently, the stiffness is measured by: • Using off-line samples • Done manually and slowly • Cannot provide feedback during manufacturing • There is a need for a device to measure stiffness in real time because the current process is time consuming and can be error prone.

  6. Stiffness Does Matter • Pieces of paper with various stiffness change in travel time through the printer path. As they move through the printing path, stiff paper “cuts the corner” around a bend, while less stiff paper travels a farther distance. • Unaccounted differences in stiffness could be the difference between a registered image and an unregistered image.

  7. Screening Matrix

  8. Converted Film Sensor • Currently uses a dual Laser system to measure Properties of film. (thick- ness, width, etc.) • Modify dual laser system to calculate the change in thickness of the paper.

  9. Ultrasonic Sensor after the first roller • Scaled down version of the sensor made to measure the bending stiffness of an 8.5” x11” sheet of paper after the first roller.

  10. Modular component • Ultrasonic sensor sits above paper. • Scaled down to measure An 8.5” x 11” piece of paper. • Measurement is completely automated.

  11. Multiple Rollers • A series of rollers where the rollers act as the guiding baffle.

  12. Weighted Matrix

  13. The Modular Component • A transducer sends a sound wave with a high frequency to a receiver. • The sound wave is distorted as it travels through a medium.

  14. The Modular Component • The echo that is received is used to determine the distance between the sensor and the paper. • Knowing these values leads to the evaluation of stiffness.

  15. Conclusion • The Modular component: • Real time data to help prevent misprints • Relieves old method of measurement • Easy installation. No extensive alterations • Measuring and printing process completely automated

  16. Resources • http://nanocpi.gatech.edu/carson/paper3.pdf • http://sedtapp.psu.edu/design/design_projects/edsgn100/fa11/Xerox%20Project%20Statement.pdf • http://www1.eere.energy.gov/industry/forest/pdfs/laser_ultrasonics.pdf • http://sensors.lbl.gov/st_laser.html • http://www.ndt-ed.org/EducationResources/HighSchool/Sound/ultrasound.htm • http://picaxe.hobbizine.com/srf05.html

  17. QuestionsPlease feel free to ask any questions at this time.

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